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Finding the Fourth Proportional to 545,037.38, 751,372.06 and 383,390.72

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Solution

The fourth proportional to 545,037.38, 751,372.06 and 383,390.72 is: 528,530.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,037.38 : 751,372.06 = 383,390.72 : x
  2. Step 2: Convert to fraction form
    545,037.38/751,372.06 = 383,390.72/x
  3. Step 3: Cross multiply
    545,037.38x = 751,372.06 × 383,390.72
  4. Step 4: Simplify right side
    545,037.38x = 288,069,075,071.28
  5. Step 5: Solve for x
    x = 288,069,075,071.28/545,037.38
  6. Step 6: Final answer
    x = 528,530.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.